/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:58:24,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:58:24,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:58:24,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:58:24,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:58:24,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:58:24,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:58:24,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:58:24,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:58:24,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:58:24,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:58:24,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:58:24,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:58:24,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:58:24,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:58:24,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:58:24,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:58:24,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:58:24,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:58:24,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:58:24,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:58:24,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:58:24,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:58:24,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:58:24,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 22:58:24,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 22:58:24,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 22:58:24,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 22:58:24,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 22:58:24,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 22:58:24,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 22:58:24,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 22:58:24,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 22:58:24,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 22:58:24,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 22:58:24,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 22:58:24,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 22:58:24,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 22:58:24,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:58:24,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:58:24,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:58:24,212 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 [2020-08-27 22:58:24,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:58:24,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:58:24,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:58:24,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:58:24,268 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:58:24,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:58:24,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:58:24,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:58:24,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:58:24,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:58:24,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:58:24,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:58:24,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:58:24,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:58:24,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:58:24,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:58:24,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:58:24,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:58:24,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:58:24,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:58:24,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:58:24,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:58:24,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:58:24,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:58:24,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:58:24,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:58:24,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:58:24,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:58:24,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:58:24,275 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-27 22:58:24,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:58:24,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:58:24,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:58:24,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:58:24,834 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:58:24,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-27 22:58:24,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3615de27e/0ed311a592f74011a18047f61a188586/FLAG09386cb7a [2020-08-27 22:58:25,621 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:58:25,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-27 22:58:25,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3615de27e/0ed311a592f74011a18047f61a188586/FLAG09386cb7a [2020-08-27 22:58:25,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3615de27e/0ed311a592f74011a18047f61a188586 [2020-08-27 22:58:25,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:58:25,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:58:25,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:58:25,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:58:25,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:58:25,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:58:25" (1/1) ... [2020-08-27 22:58:25,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc9065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:25, skipping insertion in model container [2020-08-27 22:58:25,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:58:25" (1/1) ... [2020-08-27 22:58:25,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:58:25,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:58:26,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:58:26,361 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:58:26,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:58:26,494 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:58:26,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26 WrapperNode [2020-08-27 22:58:26,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:58:26,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:58:26,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:58:26,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:58:26,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (1/1) ... [2020-08-27 22:58:26,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:58:26,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:58:26,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:58:26,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:58:26,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (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 [2020-08-27 22:58:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:58:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:58:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-27 22:58:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-27 22:58:26,652 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-27 22:58:26,652 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-27 22:58:26,652 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-27 22:58:26,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:58:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-27 22:58:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-27 22:58:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-27 22:58:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-27 22:58:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-27 22:58:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-27 22:58:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-27 22:58:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-27 22:58:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-27 22:58:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-27 22:58:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-27 22:58:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-27 22:58:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-27 22:58:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-27 22:58:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-27 22:58:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-27 22:58:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-27 22:58:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-27 22:58:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-27 22:58:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-27 22:58:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-27 22:58:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-27 22:58:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-27 22:58:26,669 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 22:58:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-27 22:58:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-27 22:58:26,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-27 22:58:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-27 22:58:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 22:58:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-27 22:58:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-27 22:58:26,673 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-27 22:58:26,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:58:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 22:58:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 22:58:26,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 22:58:27,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:58:27,222 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 22:58:27,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:58:27 BoogieIcfgContainer [2020-08-27 22:58:27,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:58:27,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:58:27,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:58:27,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:58:27,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:58:25" (1/3) ... [2020-08-27 22:58:27,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720e5786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:58:27, skipping insertion in model container [2020-08-27 22:58:27,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:58:26" (2/3) ... [2020-08-27 22:58:27,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720e5786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:58:27, skipping insertion in model container [2020-08-27 22:58:27,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:58:27" (3/3) ... [2020-08-27 22:58:27,248 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-08-27 22:58:27,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:58:27,270 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:58:27,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:58:27,320 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:58:27,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:58:27,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:58:27,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:58:27,321 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:58:27,321 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:58:27,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:58:27,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:58:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-08-27 22:58:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-27 22:58:27,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:58:27,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:58:27,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:58:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:58:27,359 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-08-27 22:58:27,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:58:27,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639806958] [2020-08-27 22:58:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:58:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:58:27,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:58:27,545 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Proof production must be enabled (you can do this via setOption). at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:170) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-27 22:58:27,553 INFO L168 Benchmark]: Toolchain (without parser) took 1712.84 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 103.3 MB in the beginning and 107.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,554 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.15 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 103.1 MB in the beginning and 168.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,556 INFO L168 Benchmark]: Boogie Preprocessor took 67.47 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 165.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,557 INFO L168 Benchmark]: RCFGBuilder took 669.43 ms. Allocated memory is still 203.9 MB. Free memory was 165.9 MB in the beginning and 119.8 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,558 INFO L168 Benchmark]: TraceAbstraction took 313.33 ms. Allocated memory is still 203.9 MB. Free memory was 119.8 MB in the beginning and 107.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-27 22:58:27,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.15 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 103.1 MB in the beginning and 168.6 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.47 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 165.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 669.43 ms. Allocated memory is still 203.9 MB. Free memory was 165.9 MB in the beginning and 119.8 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 313.33 ms. Allocated memory is still 203.9 MB. Free memory was 119.8 MB in the beginning and 107.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Proof production must be enabled (you can do this via setOption). de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Proof production must be enabled (you can do this via setOption).: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...