/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:58:35,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:58:35,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:58:35,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:58:35,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:58:35,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:58:35,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:58:35,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:58:35,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:58:35,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:58:35,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:58:35,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:58:35,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:58:35,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:58:35,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:58:35,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:58:35,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:58:35,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:58:35,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:58:35,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:58:35,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:58:35,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:58:35,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:58:35,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:58:35,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:58:35,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:58:35,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:58:35,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:58:35,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:58:35,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:58:35,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:58:35,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:58:35,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:58:35,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:58:35,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:58:35,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:58:35,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:58:35,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:58:35,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:58:35,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:58:35,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:58:35,359 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 [2020-08-21 18:58:35,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:58:35,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:58:35,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:58:35,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:58:35,390 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:58:35,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:58:35,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:58:35,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:58:35,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:58:35,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:58:35,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:58:35,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:58:35,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:58:35,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:58:35,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:58:35,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:58:35,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:58:35,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:58:35,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:58:35,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:58:35,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:58:35,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:58:35,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:58:35,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:58:35,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:58:35,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:58:35,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:58:35,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:58:35,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:58:35,397 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:58:35,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:58:35,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:58:35,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:58:35,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:58:35,743 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:58:35,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-21 18:58:35,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd697397/f90644ca871c4d70874dba7ce9c5d865/FLAG5f3ec1049 [2020-08-21 18:58:36,323 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:58:36,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-21 18:58:36,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd697397/f90644ca871c4d70874dba7ce9c5d865/FLAG5f3ec1049 [2020-08-21 18:58:36,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cd697397/f90644ca871c4d70874dba7ce9c5d865 [2020-08-21 18:58:36,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:58:36,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:58:36,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:58:36,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:58:36,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:58:36,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:58:36" (1/1) ... [2020-08-21 18:58:36,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694a7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:36, skipping insertion in model container [2020-08-21 18:58:36,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:58:36" (1/1) ... [2020-08-21 18:58:36,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:58:36,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:58:37,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:58:37,300 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:58:37,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:58:37,434 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:58:37,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37 WrapperNode [2020-08-21 18:58:37,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:58:37,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:58:37,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:58:37,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:58:37,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (1/1) ... [2020-08-21 18:58:37,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:58:37,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:58:37,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:58:37,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:58:37,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (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 [2020-08-21 18:58:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:58:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:58:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 18:58:37,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 18:58:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 18:58:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 18:58:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 18:58:37,623 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 18:58:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 18:58:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 18:58:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:58:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:58:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 18:58:37,629 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 18:58:37,630 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 18:58:37,631 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 18:58:37,632 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 18:58:37,633 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 18:58:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:58:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:58:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:58:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:58:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:58:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:58:38,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:58:38,203 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-08-21 18:58:38,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:58:38 BoogieIcfgContainer [2020-08-21 18:58:38,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:58:38,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:58:38,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:58:38,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:58:38,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:58:36" (1/3) ... [2020-08-21 18:58:38,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7764a148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:58:38, skipping insertion in model container [2020-08-21 18:58:38,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:58:37" (2/3) ... [2020-08-21 18:58:38,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7764a148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:58:38, skipping insertion in model container [2020-08-21 18:58:38,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:58:38" (3/3) ... [2020-08-21 18:58:38,215 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-08-21 18:58:38,226 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:58:38,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-08-21 18:58:38,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-08-21 18:58:38,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:58:38,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:58:38,272 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:58:38,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:58:38,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:58:38,273 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:58:38,273 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:58:38,273 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:58:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-08-21 18:58:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 18:58:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:38,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:38,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:38,307 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-08-21 18:58:38,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:38,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399676334] [2020-08-21 18:58:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:58:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:58:38,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399676334] [2020-08-21 18:58:38,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:58:38,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:58:38,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999525470] [2020-08-21 18:58:38,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:58:38,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:58:38,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:58:38,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:58:38,556 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-08-21 18:58:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:58:38,708 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-08-21 18:58:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:58:38,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-21 18:58:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:58:38,720 INFO L225 Difference]: With dead ends: 92 [2020-08-21 18:58:38,721 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 18:58:38,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:58:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 18:58:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 18:58:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 18:58:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-08-21 18:58:38,793 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2020-08-21 18:58:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:58:38,794 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-08-21 18:58:38,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:58:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-08-21 18:58:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 18:58:38,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:38,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:38,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:58:38,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times [2020-08-21 18:58:38,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:38,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572481915] [2020-08-21 18:58:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:58:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:58:38,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572481915] [2020-08-21 18:58:38,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:58:38,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:58:38,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535608037] [2020-08-21 18:58:38,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:58:38,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:58:38,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:58:38,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:58:38,932 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states. [2020-08-21 18:58:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:58:39,070 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-08-21 18:58:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:58:39,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-21 18:58:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:58:39,072 INFO L225 Difference]: With dead ends: 43 [2020-08-21 18:58:39,072 INFO L226 Difference]: Without dead ends: 41 [2020-08-21 18:58:39,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:58:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-21 18:58:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-21 18:58:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 18:58:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-08-21 18:58:39,081 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2020-08-21 18:58:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:58:39,081 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-08-21 18:58:39,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:58:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-08-21 18:58:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 18:58:39,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:39,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:39,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:58:39,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times [2020-08-21 18:58:39,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:39,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847192444] [2020-08-21 18:58:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:58:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:58:39,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847192444] [2020-08-21 18:58:39,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:58:39,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:58:39,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999825706] [2020-08-21 18:58:39,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:58:39,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:58:39,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:58:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:58:39,169 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2020-08-21 18:58:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:58:39,293 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-08-21 18:58:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:58:39,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 18:58:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:58:39,295 INFO L225 Difference]: With dead ends: 67 [2020-08-21 18:58:39,295 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 18:58:39,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:58:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 18:58:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-08-21 18:58:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 18:58:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-08-21 18:58:39,304 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-08-21 18:58:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:58:39,304 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-08-21 18:58:39,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:58:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-08-21 18:58:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 18:58:39,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:39,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:39,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:58:39,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:39,307 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-08-21 18:58:39,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:39,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23035537] [2020-08-21 18:58:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:58:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:58:39,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23035537] [2020-08-21 18:58:39,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:58:39,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:58:39,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27217883] [2020-08-21 18:58:39,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:58:39,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:58:39,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:58:39,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:58:39,441 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-08-21 18:58:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:58:39,621 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-08-21 18:58:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:58:39,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-21 18:58:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:58:39,623 INFO L225 Difference]: With dead ends: 39 [2020-08-21 18:58:39,623 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 18:58:39,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:58:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 18:58:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 18:58:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 18:58:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-08-21 18:58:39,633 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16 [2020-08-21 18:58:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:58:39,634 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-08-21 18:58:39,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:58:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-08-21 18:58:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 18:58:39,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:39,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:39,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:58:39,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-08-21 18:58:39,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:39,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922549529] [2020-08-21 18:58:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:58:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:58:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:58:39,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922549529] [2020-08-21 18:58:39,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:58:39,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:58:39,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440096564] [2020-08-21 18:58:39,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:58:39,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:58:39,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:58:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:58:39,767 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-08-21 18:58:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:58:39,969 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-08-21 18:58:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 18:58:39,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-21 18:58:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:58:39,971 INFO L225 Difference]: With dead ends: 72 [2020-08-21 18:58:39,971 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 18:58:39,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:58:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 18:58:39,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 18:58:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 18:58:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-08-21 18:58:39,979 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2020-08-21 18:58:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:58:39,980 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-08-21 18:58:39,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:58:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-08-21 18:58:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 18:58:39,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:58:39,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:58:39,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:58:39,983 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:58:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:58:39,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-08-21 18:58:39,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:58:39,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193368147] [2020-08-21 18:58:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:58:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:58:40,031 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:58:40,031 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:58:40,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:58:40,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:58:40 BoogieIcfgContainer [2020-08-21 18:58:40,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:58:40,060 INFO L168 Benchmark]: Toolchain (without parser) took 3410.14 ms. Allocated memory was 137.9 MB in the beginning and 229.1 MB in the end (delta: 91.2 MB). Free memory was 99.4 MB in the beginning and 84.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,062 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.44 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 99.2 MB in the beginning and 164.8 MB in the end (delta: -65.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,070 INFO L168 Benchmark]: Boogie Preprocessor took 117.17 ms. Allocated memory is still 198.7 MB. Free memory was 164.8 MB in the beginning and 162.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,072 INFO L168 Benchmark]: RCFGBuilder took 654.02 ms. Allocated memory is still 198.7 MB. Free memory was 162.0 MB in the beginning and 114.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,073 INFO L168 Benchmark]: TraceAbstraction took 1847.93 ms. Allocated memory was 198.7 MB in the beginning and 229.1 MB in the end (delta: 30.4 MB). Free memory was 113.7 MB in the beginning and 84.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:58:40,084 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.44 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 99.2 MB in the beginning and 164.8 MB in the end (delta: -65.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.17 ms. Allocated memory is still 198.7 MB. Free memory was 164.8 MB in the beginning and 162.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 654.02 ms. Allocated memory is still 198.7 MB. Free memory was 162.0 MB in the beginning and 114.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1847.93 ms. Allocated memory was 198.7 MB in the beginning and 229.1 MB in the end (delta: 30.4 MB). Free memory was 113.7 MB in the beginning and 84.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 91 SDslu, 234 SDs, 0 SdLazy, 350 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...